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dsp_dsp: Messages are modified by service before being sent to DSP

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This commit is contained in:
MerryMage 2016-03-07 21:51:59 +00:00
parent ff28080091
commit 172a362884
1 changed files with 18 additions and 0 deletions
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18
src/core/hle/service/dsp_dsp.cpp
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@ -303,6 +303,24 @@ static void WriteProcessPipe(Service::Interface* self) {
message[i] = Memory::Read8(buffer + i);
}
// This behaviour was confirmed by RE.
// The likely reason for this is that games tend to pass in garbage at these bytes
// because they read random bytes off the stack.
switch (pipe) {
case DSP::HLE::DspPipe::Audio:
ASSERT(message.size() >= 4);
message[2] = 0;
message[3] = 0;
break;
case DSP::HLE::DspPipe::Binary:
ASSERT(message.size() >= 8);
message[4] = 1;
message[5] = 0;
message[6] = 0;
message[7] = 0;
break;
}
DSP::HLE::PipeWrite(pipe, message);
cmd_buff[0] = IPC::MakeHeader(0xD, 1, 0);